UL-A2500 v2.0

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UL-A2500 v2.0

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4.7 average, based on 3 reviews


Product Information

UL-A2500 v2.0


Car Audio Magazine 
This UL-A2500v2.0 Series Amplifier is built using the finest techniques and materials available today. Critical  MASS amplifiers are manufactured and tested to meet the highest component quality and control standards. Engineered to provide decades of musical enjoyment. "Critical MASS is a Car Audio company whose Super-Fi electronics have made innovation history in the world of high-end mobile sound" CA&E. Critical Mass was formed from the World’s First Car Audio and Enhancement school by one of Car Audio's first innovators and most influential people in our industry who started the world's first Car Audio and enhancement school back in the late 1980s “CMA”, from this school Critical MASS was started in Orlando, FL, in 1990. Till this day parts of the technical principles and teachings of CMA are used industry wide in Mobile Electronics teachings and books by associations such as MERA and CEA. Over the past decades Critical MASS has continued to innovate and now leading the way with the Critical MASS $259,000 CES-5.1 one of a kind Esoteric ESL sound system. Not only does Critical MASS make the Best and most expensive car audio system in the world, but this system (which  integrates this UL Series amplifier series) is so good, that when Car Audio Magazine tested the least expensive part of our $259,000 ESL system “the UL12” called it " Perfect ", and "the BEST" and added that it was so good that he would sell a few things, to own one because it's worth every dollar! In  addition the Critical MASS UL12 was rated #1 over all others by Car Audio Magazine, including companies such as JL Audio, Image Dynamics, Alpine, Xtant,  Kicker, Arc Audio, MB Quart, Digital Designs, Cerwin-Vega, Orion, Phoenix Gold  Earthquake etc…  In other words  Imagine how good the rest of the system must sound if the least expensive part of it is the world's BEST? You will not have to imagine much longer as the UL-A2500 v2.0 series amplifier you just purchased is exactly the same Critical MASS series Amplifier used in that system.  






Mono block digital subwoofer amplifier
Bass Boost at 50Hz control: 6-12dB
Balanced low input & high input
Variable subsonic filter 10~50Hz, 18dB/OCT
Variable low pass filter 40~220Hz, 24dB/OCT
Protection circuit for thermal, short circuit
and reverse polarity connection of Battery
.75 ohm stable
Small Footprint
Light Weight
Ultra High Efficiency
Frequency response 9Hz~250Hz
RMS power at 4 Ω mono 1320w
RMS power at 2 Ω mono 1950w
RMS power at 0.75Ω mono 2520w
Max power 3000w
T.H.D 0.01%
Input sensitivity 200mV~8V
Input impedance 92K Ω
Damping factor >520
S/N ratio 105dB
Product CodeUL-A2500v20

Customer Reviews

Average Rating: 4.7


This amplifier has a ton of power and it is clean power. The critical Mass Audio amplifiers are so small they can be mounted any place. This amp has power to spare. The only down side is the price, but I guess you get what you pay for. Very happy with my purchase. (May 27 2010, 12:11 PM)


Very compact, powerful amp! Can be mounted almost anywhere because of its size. (Mar 04 2010, 22:27 PM)


This amp has the most power I have ever tested. I have used lots of amps in my lifetime, this Critical Mass ULA2500 V.2 amplifier is the ''TOP DOG''. Is very small and it packs a HUGE PUNCH. If you have the money to buy a top of the line power amplifier, this is the one. (Sep 20 2009, 15:27 PM)
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